New P28 Chip, Obd2 To Obd1 Conversion

I need to convert my OBD2 to OBD1, For two reasons. One is I recently installed a High-flow Cat, and I need to bypass the O2 sensor so my check engine light is disengaged. Second reason is because instead of buying a simulator to emulate this effect, OBD1 will not check this, and then conversion can offer a horsepower advantage because OBD1 is better and because I am getting a Skunk2 / Or Mugen Chipped ECU combined with the OBD1 conversion ( The chip converts and acts as an ECU, and is a P28 chip ).